Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

51.4°F 10.8°C
Cold Thermal Gear Required
51.4°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Cold shock risk with rapid dexterity loss (10–15 mins). Wetsuit or drysuit strongly advised for any immersion.

Measurement Time: Thursday, November 5, 2026, 10:15 AM PST

Temperature Locations

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Local Points of Interest

Stanislaus National Forest; Colfax Spring, CA; Mather, CA; Harden Flat, CA

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Tuolumne River

Station Name: TUOLUMNE R BL EARLY INTAKE NR MATHER CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 2,369 feet

Nearest Address:
Cherry Lake Rd
Groveland, CA 95321
Tuolumne County

GPS Coordinates: 37.8815908, -119.9701824

Nearby Water Temperatures

Tuolumne River, Groveland, CA (1.3 mi)
Cherry Creek, Groveland, CA (6.6 mi)
Tuolumne River, Groveland, CA (10.1 mi)
Tuolumne River, Groveland, CA (17.1 mi)
Merced River, Yosemite Valley, CA (24.7 mi)
Middle Fork San Joaquin River, Mammoth Lakes, CA (51.3 mi)
Deadman Creek, Mammoth Lakes, CA (57 mi)
Hot Creek, Mammoth Lakes, CA (62.8 mi)
Hot Creek, Mammoth Lakes, CA (63.4 mi)
San Joaquin River, Friant, CA (63.4 mi)
Hot Creek, Mammoth Lakes, CA (64.6 mi)
Trout Creek, South Lake Tahoe, CA (71.7 mi)
Upper Truckee River, South Lake Tahoe, CA (71.9 mi)
General Creek, Tahoma, CA (81.3 mi)
South Fork American River, Rescue, CA (82.9 mi)

Weather for Groveland, California

Current Weather

57.4°F
Clear
Conditions: Clear
Humidity: 58%
Feels Like: 53.4°F
Wind: ENE 4.3 mph
Wind Gusts: 11 mph
Pressure: 30.06 in
Precipitation: 0 in
Cloud Cover: 10%
Visibility: 6 mi
UV Index: 0

Weather Forecast

Sunny
Thu
H: 61°F
L: 49°F
Sunny
Fri
H: 63°F
L: 47°F
Sunny
Sat
H: 70°F
L: 51°F

Air Quality

EPA Index 1 • Good

Air quality is satisfactory, and air pollution poses little or no risk.

PM2.5
6.4 μg/m³
Good
PM10
12.8 μg/m³
Good
Ozone (O3)
70 μg/m³
Photochemical
NO2
9.1 μg/m³
Nitrogen Dioxide
SO2
0.6 μg/m³
Sulfur Dioxide
CO
189 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 27m daylight
Sunrise 6:30 AM
Solar Noon 11:43 AM
Sunset 4:57 PM
Moon
Waning Crescent • 11%
Moonrise 2:55 AM
Transit 9:00 AM
Moonset 2:56 PM

Best Times for Fishing or Hunting

Major Periods

8:30 AM - 11:00 AM
8:52 PM - 11:22 PM

Minor Periods

2:25 AM - 3:55 AM
2:26 PM - 3:56 PM
Action Rating:
Fair Action 2/5
Thursday, November 5, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 55.1°F
Average Humidity: 56%
Chance of Rain: 5%
Wind: 5.8 mph
UV Index: 3.6

Astronomical

Sun
10h 27m daylight
Sunrise 6:30 AM
Solar Noon 11:43 AM
Sunset 4:57 PM
Moon
Waning Crescent • 11%
Moonrise 2:55 AM
Transit 9:00 AM
Moonset 2:56 PM

Best Times for Fishing or Hunting

Major Periods

8:30 AM - 11:00 AM
8:52 PM - 11:22 PM

Minor Periods

2:25 AM - 3:55 AM
2:26 PM - 3:56 PM
Action Rating:
Fair Action 2/5
Friday, November 6, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 56.2°F
Average Humidity: 39%
Chance of Rain: 3%
Wind: 5.4 mph
UV Index: 3.3

Astronomical

Sun
10h 25m daylight
Sunrise 6:31 AM
Solar Noon 11:43 AM
Sunset 4:56 PM
Moon
Waning Crescent • 5%
Moonrise 3:59 AM
Transit 9:44 AM
Moonset 3:20 PM

Best Times for Fishing or Hunting

Major Periods

9:14 AM - 11:44 AM
9:36 PM - 12:06 AM

Minor Periods

3:29 AM - 4:59 AM
2:50 PM - 4:20 PM
Action Rating:
Fair Action 2/5
Saturday, November 7, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 60.8°F
Average Humidity: 39%
Chance of Rain: 3%
Wind: 5.4 mph
UV Index: 2.7

Astronomical

Sun
10h 23m daylight
Sunrise 6:32 AM
Solar Noon 11:43 AM
Sunset 4:55 PM
Moon
Waning Crescent • 1%
Moonrise 5:03 AM
Transit 10:28 AM
Moonset 3:46 PM

Best Times for Fishing or Hunting

Major Periods

9:58 AM - 12:28 PM
10:21 PM - 12:51 AM

Minor Periods

4:33 AM - 6:03 AM
3:16 PM - 4:46 PM
Action Rating:
Very Good 4/5
The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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